Gearing for traction-engines.



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l GBARING POE TRACTION ENGINES. APPLwAT'IoNlILBD JAN. zo. 190B. 933,945,Patented sept. 14.1909.

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A A. W. AITKEN. GEARING FOR TRAGTION ENGINES. APPLICATION FILED JAN. 20.1908.

Patented spia. 14, '1909.

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A. W. AITKBN. GBARING FOR TRAGTION ENGINES. APPLIGATION FILED'JAN. 20.1908.

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KEN, F SFERENGFIELD, OHM), ASSIGNOR 'IO THE KELLYSRINGFIELD ROAD 532DLEP.. COMPANY, 0F SPRNGFIELD, DELIG, A GRPGBATION (JF OHIO.

@E ARING FR TRLCTIGI'-ENGENES.

Speceaton ef Letters Patent.

Application filed January 20, 1.993.

'Patented Sept. 14, 1909. Serial No. 411,570.

To all whom it Pme/3j concern:

Be it known that l, ANDREW W'. Arrnnzv, a eitizen of the United States,residing at giringliollfl. in the county ot tflarl. and State of Ohio,have iiivented certain ,new and useiul linnn-ovenients in Gearing for 'l'actionllngines, ol' which. 'the following is a specification.

My invention relates to improvements in road rollers, traction enginesor similar inachines 'drijven by ges engine driving appliances.

l have nreierahlyshown a road roller with a four-cylinder gas engine forthe driving engine, though iny improwunent is not liniited to thatparticular type ol' machine.

In a gene 'al Way my improvement relates to the connections between thedriving engine and the train ot' gear mechanism for the traction Wheelsof the road roller, and one ot' my objects is to construct the parts sothe machine may be readily reversed without employing` a multiplicityoiparts, While my improved machine will operate in an improved manner ashereinafter fully ex- Jplained.

In the drawings Figure l is a side View in elevation showing Ithe frameol.' the machine and parts necessary to illustrate my im-4 provement.Fig. 2 is a central longitudinal sectional View ou the line y v/ of Fig.3. Fig. 3 is a vertical sectional View taken on the line of Fig. 2. I

Like letters of reference represent like 3f parts throughout thedili'erent views.

The driven or traction wheels f1, represent 'the ordinary Wheels of aroad roller.

al is thefiframe of the machine and the shaft i2 for the wheels L issupported by said frame in the usual manner. I have Shown an ordinarygear o (Figs. l. and 2) rigidly secured to the shaft o?, which isoonneon-dY 'to the traction wheel a, and this gear is shown in mesh'with the pinion o which pinion is rigidly secured to a shaft ajournaled loosely inthe frame o1 and at the o piosite end of the shafte5 is rigidly secured an' intermediate gear o which is shown in meshwith the pinion o7 (see Fig. 2). The pinion o7 is keyed to a stub shafto8 jour- "heled loosely in the traine of the .machine in ordinary orusual Way. llt is apparent that this train of gears remains connected sothat motion is 'transmitted from. the pinion el to the traction ordriven wheels a.

The pinion a" meshes with the small gear an which is keyed to thetransverse shaft o which shaft is ,airnaled loosely in the frame work ofthe machine and carries at its opposite end a brake Wheel afl". The geara is shown keyed to the shaft for the purpose of disconnecting thetraction Wheels and train of gear meehanism from the small driving e, asit is often desirable to transform the machine into a stationary poweroperating engine.

Referring now to the vconnections between the driving engine and thesmall driving gear o, l have shown (Fig. 2) loosely journaled on theshaft e two large ily wheels o and al". To the ily Wheel nl there isrigidly secured a beveled gear wheel am and to the llyJ jwheel a. issecured a gear wheel am. These beveled gear wheels are showncontinuously in mesh with the beveled gear o," and the three gearsconstitute intermediale gearing lthrough Whiclrpower may be applied toboth ily Wheels equally. The gear a is rigidly .secured to thelongitudinal shaft om (see Fig. I have shown preferably an ordinaryjointed connection between the longitudinal shaft a and the sleeve a,and an ordinary clutch connection for op4 eral ively connecting thedriving.;V shaft ot' the `gas engine with the longitudinal shaft om.This comprises an ordinary sliding collar mounted upon the sleeve am,and. consequently when the collar L22 of the friction clutch is mov-edto the right (looking at Fig. El) the sleeve al will be driven by thel'ly wheel ai which in turn Will transmit motion to the longitudinalshaft als. Though l. have already shown two large fly Wheels ou the.transverse shaft ou: I iind it desirable. to employ the ordinary gasengine fly wheele'l'y and lhe clutch connection therewith7 so that l"can operate the gas engine inilopeiulcnt oi its driving connectionsuntil it aluiires the desired speed, and then by operating a hand lever(not shown) at the rear of the machine, which hand lever con nef'ls withthe rod e which in turn eonnevls with the roel: shaft om connected tothe collar the clutch mechanism will'be op-y era-.ted so that the flywheel o will drive the longitudinal shaft als which in turn'will drivethe intermediate gearnneehanisln 11555 o1 and o, and thereby rot-etecontinuouslyl the large driving Wheels el@ and o. From: this description1t will be apparent that the 110 gear e may rotate continuously Abyreason of its connections with the driving shaft of the gas engine andashereinafter more fully explained. -iutilize one of the large fly Wheelsfor a driving` connection with the small driving gear a and while thisparticular .'ly` wheel operatively connected with Said gear, the drivingengine drives the roadroller; inone direction and the other opposing dywheel will continue to rotate, but

in a direction reverse to that of its oom-` n panio'n liy wheel therebyaffording very desirable means for assisting the road roller to overcomed i'llieulties which are necessarily met in the operation of a machineover ordinary roads. This mechanism is especially designed to aordsimple and compact connec-y tions for driving the machine forward andfor reversing the' movement, while at the same time the improved form ofconnecting devices insures the machine beingoperated in` an improvedvmanner over obstructions that are apt to be -met. with in the operationof the machine.

The connections between thel gear a, and shaft e, with the ily wheelsL13 Aand a are oit the following character: Two clutch spiders, Z) and1, are rigidly secured to said shaft, e, one at the side ofeachily-wheel,

`al and (1,1% There ismounted on said spi` ders well known forms ofsliding collars b2 .tcward 'its fili/wheel and thereby when one dywhe'el'isr disconnected from the shaft a the other fly wheel will besimultaneously connected therewith to drive said shaft. It is to beunderstood that there is an intermeydiatc position where both clutchesare diesen 'gagedi'roni the fly wheels. -As is usual vin fia theparticular formofclutchwhich lf have illustrated here1the-shoes arepreferably made ot wood vand are somewhat elastic andI this elasticitypeii'mits the sliding collar to be pushed a triile past the center ofoscillation et the toggle rods so as to lock the shoe in lric'tionalengagement with the internal rim oi' the fly wheel. 2 The operatingmeans for the clutches consists of a bell crank b9 which is securedtothe stud o, journaled loosely in tlie frame of. the machine.

coin'ieci'ed' with the ordinary hand lever (noti shown)- located attherear of the machine. The other free end of the bell crank bs is AOneloittliejiree ends ot the bell crank bs ncon#l nects 'with a -rod 71Wwhich rod in lt'urn is'- pivotally connected with; a link bi1 (shown indotted lines in Fig. 2) and this link, 1211,1s pivotally connected to asup orting arm, Z112,

which projects from the stu b, being rigid A therewith. `.llfievstud,Z513, .at its-up er enti, is rigidly secured to the yoke, blbw ichengages the clutch collar, b3, so tha;- when the stud7 b1, is oscillatedby the arm, b, the yoke, b, will move to operate the clutch collar. f

The parts, as Shown in Fig.y 2, have been thrown to cause the iywheeLa13 todrivc vthe shaft and gear Wheel a. in one direction.Consequently, when the rod bm is pushed forward (away from the rear gfthe machine) the bell 'crank be is -osciiiated which in turn moves theconnecting link b and oscillates the stud 513 which is operativelyconnected with the clutch collar b3 to slide the collar b3 away from itscompanion iy wheel a18 and thereby release the shoe o7 from engagement.

This movement. of the h'ell crank simultane-- ously rocks the stud o,and fsaid stud being connected with the clutch collar b2 throws the'clutch collar toward its ycompanion `ly wheel a and thereby forces theshoe vb lin' engagement with the said fly wheel to re- 'versc themovement of the shaft an and gear a for reversing the machine. It isap-v parent that the Hy wheel als. will continue to rotate in a reverse`direction to that olf the wheel a1'L and this idle fly wheel willrgenerate momentum to assist the opposing fly wheel at any moment whenexcessive load is i met by said last mentioned iiy Wheel. For

instance, if the teeth of the pinion a" acting now to drive the beveledwheel a1, which is operatively connected to the carryin Wheels of themachine, should be retarde tion wheel, the gear a on the fly wheel awill assist the pinion allby reason of momentumstored up in the flywheelal. which' has theretofore been moving independent of the `load uponsaid pinion'. f

Having described my invention, I claim as followsz;

l. ln a traction engine, the combination ofr a driving engine ,with alongitudinal y.

driving shgift, an axle for supporting the driving enine located atright an les to said longitudin 'l driving shaft, a 'driven shaftsubstantie ly at right angles to said driving shaft, two opposingflywheels, two clutch members, said clutch members being on said in itslmovement by obstructions met by theV tracdriven shaft, meansconnectedfwith said driving shaft for drivingv said flywheelscontinuously but in opposite directions,

gears between said clutch members and the supporting axle, and means foroperatin Said -clutchj members whereby onel of sai tateslcontinuouslyfree rom its correspond-y ing clutch member allowing its momentum `toymembere nliay rotate Vin unison .with a flyi' wheel .while the oth'eroposing flywheel ro-' esem@ 1 assist the other ywheel, substantially asspecified.

2. In a machine of the character mentioned, the combination of atraction engine with a driving shaft7 an a-Xie for said tra@ tionengine, said ,axle being located at right angles to the driving shaft,e. driven shaft,

two opposing iiy Wheels, and dutch mem bex-son thedriven shaft,connections between the driving shaft and ly Wheels for driving saidiywheels vcontinuously but in opposite directions, and means fonoperating seiii clutch membeis'iiito and out of engegemeet with saidiywheels whereby either of said iiywheeis may restate in unison. Withits clutch member Whiie its assoeiatecfiywheel will rotate eontinuousiyand its imminent-um assist the first mentionechywheel geivs between theaxle and 'the chith members, isubstzmtiaily 'as specified.

1n testimony whereof, I he feiereuntiset my hand this 9th dey ofJanuary, i908.. ANDREW W. LTi-E.

Witnesses:

Ceres. Wemag, MARJORIE'S Mesem?"

